Articles
Modelling of stiffness of Irene apple during storage and shelf-life
Article number
1382_20
Pages
157 – 162
Language
English
Abstract
The firmness of apple is one of the most important factors for consumers acceptance.
Understanding the changes of apple firmness and prediction of its kinetics are essential information for postharvest management.
Cultivar Irene is a new generation of Gala clone, which has no literature coverage yet.
The work aimed to analyze the behavior of this cultivar in cold storage and shelf-life.
Acoustic firmness (stiffness, g2/3 s‑2) was measured during 7 months of cold storage and consecutive shelf-life for 7 days.
An exponential decay model was used to estimate stiffness values.
Autocorrelation test confirmed that the model fit gave no systematic errors (Durbin-Watson test value of 1.66). The exponential decay model achieved R2=0.9897 determination coefficient and low prediction error of RMSE=0.4198 (with RPD=10.56). The stiffness values continued to decrease during shelf-life but changed less with increasing cold storage time.
The comparison of kinetics revealed that acoustic firmness changed in shelf-life 2.98 times faster than in cold storage.
This result can contribute to Storage Time Equivalent Value (STEV) based models for apples.
The results of the presented study contribute to the prediction of optimum storage period and help farmers meet the market demand.
Understanding the changes of apple firmness and prediction of its kinetics are essential information for postharvest management.
Cultivar Irene is a new generation of Gala clone, which has no literature coverage yet.
The work aimed to analyze the behavior of this cultivar in cold storage and shelf-life.
Acoustic firmness (stiffness, g2/3 s‑2) was measured during 7 months of cold storage and consecutive shelf-life for 7 days.
An exponential decay model was used to estimate stiffness values.
Autocorrelation test confirmed that the model fit gave no systematic errors (Durbin-Watson test value of 1.66). The exponential decay model achieved R2=0.9897 determination coefficient and low prediction error of RMSE=0.4198 (with RPD=10.56). The stiffness values continued to decrease during shelf-life but changed less with increasing cold storage time.
The comparison of kinetics revealed that acoustic firmness changed in shelf-life 2.98 times faster than in cold storage.
This result can contribute to Storage Time Equivalent Value (STEV) based models for apples.
The results of the presented study contribute to the prediction of optimum storage period and help farmers meet the market demand.
Authors
N.T.T. Ha, T.T. Pham, L.P.L. Nguyen, H.X. Mac, M. Gob, Z. Sasvar, G. Szabo, Zs. Horvath-Mezofi, T. Zsom, G. Hitka
Keywords
firmness, acoustic, postharvest, regression, Malus domestica L.
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